然而，强烈的季节性农民的房屋，主要是在非冰冻期和淡季。

However, strong seasonal peasant houses, mainly in non-frozen period and the slack season.

东北地区4季变化明显，冬季寒冷，冰冻期较长，渗滤液的产生具有明显的不连续性。

Leachate production is evidently discontinuous in the chilly northeast areas because of the distinct 4-seasons conversion and long frozen time.

自从几十亿年前地球上出现第一个生命开始，气候就剧烈地变化着，时常是从一个时期突然进入另一个时期——从炎热的湿季到冰冻期。

From the moment life began on the planet billions of years ago, the climate has swung drastically and often abruptly from one state to another - from tropical swamp to frozen ice age.